Can you expand a superioty dice during a reaction attack?

@JeremyECrawford Can you expand a superioty dice during a reaction attack? (Attack of opportunity for instance)

— Loïc Lavoie (@loiclavoie) April 21, 2017

A maneuver, not the rule on superiority dice, tells you when you can use it (taking the Attack action, making a weapon attack, etc.). #DnD https://t.co/sTH1rJGOyc

— Jeremy Crawford (@JeremyECrawford) April 21, 2017